Well some people do enjoy some of those games and some people really need the money more than they need to make the games of their dreams. But these smaller games make up a larger group of users so you see more posts about those topics.
But once a lot of the bigger games get going, they don't usually need to ask as many questions, so you see less of those posts. And some of these larger games take a very large commitment so not as many get made.
Mobile games with monetization are the current "thing", and many view it as a lower barrier to entry with less risk (they're right), but look a little deeper in the creation forums and you'll see stuff. Of course it's the usual list of Airscape, Penelope, Loot Pursuit, Shards, Dream Journey, and Courier, so the content is there. That other stuff is just trendy.